This would seem to be related to a pop up blocker in your browser. To resolve this you could follow these steps, or you can contact your IT team for help regarding this as well.

1. Click on the Settings button in the upper right corner next to the address bar (looks like 3 vertical dots)2. Choose Settings from the list of options that you see3. Scroll to bottom and click the advanced options4. Under privacy, there is a "content settings" button option - click this5. Scroll down to pop ups and either allow all sites to show pop ups or choose the manage exceptions option

This should allow you to upgrade successfully! Here are a couple good resources for once you do upgrade as well: